For a monatomic ideal gas Cv = 3R/2. What is the value of γ = Cp/Cv?
Correct answer C. 1.67
Explanation
Cp = Cv + R = 5R/2, so γ = (5R/2)/(3R/2) = 5/3 ≈ 1.67. The value 1.40 applies to diatomic gases such as air.
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